#TimeTravel (#retrograde) is transporting anything into the #past: a #person, a #quantum #signal, a #thought.
Resulting from some combination of:
• #QuantumEntanglement
• #Wormholes
• #DarkEnergy & #DarkMatter
• #ManyWorlds & #Multiverse
• #Tachyons & faster-than-light (superluminal) #particles
• #Consciousness may involve quantum processes in the #brain
• Rotating cylinders or gyroscopes (after #HGWells)
• Higher #dimensional #geometries, folding or looping #SpaceTime
• & c …